Electrode device in transformer oil-paper insulation air gap defect partial discharge research

A technology of air gap defect and partial discharge, which is applied in the direction of testing dielectric strength, etc., can solve problems such as test error and affect test accuracy, and achieve the effect of easy assembly, reducing unnecessary errors, and reducing unnecessary errors

Inactive Publication Date: 2018-08-17
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0004] However, in the process of researching and testing the partial discharge characteristics of oil-paper insulation air gap defects, it is inevitable that the air gap defect test sample between the upper and lower electrodes will be offset due to the strong high voltage, making the air gap in the oil paper The part of the defect deviates from the center position under high voltage, especially for the research on the partial discharge of oil-paper insulation air gap defects in transformer oil, which affects the accuracy of the test and brings unnecessary test errors

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  • Electrode device in transformer oil-paper insulation air gap defect partial discharge research
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  • Electrode device in transformer oil-paper insulation air gap defect partial discharge research

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[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention is described below through specific embodiments shown in the accompanying drawings. It should be understood, however, that these descriptions are exemplary only and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0021] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the drawings, and the related Other details are not relevant to the invention.

[0022] Such as figure 1 As shown, this specific embodiment adopts the following technical scheme: including a flat plate electrode 1 , a...

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Abstract

The invention discloses an electrode device in transformer oil-paper insulation air gap defect partial discharge research, and relates to the technical field of transformer oil-paper insulation air gap defect partial discharge. The upper end of a top electrode is connected to a high-voltage power supply part through a wire. The lower end of the top electrode is an oil-paper sample containing an air gap defect. The oil-paper sample containing the air gap defect is placed on an electrode containing a tablet. The oil-paper sample containing the air gap defect is fixed to the electrode containingthe tablet by a tableting mechanism. The lower end of the electrode containing the tablet is connected to the ground through a wire. The electrode device can be applied to the research of related oil-paper insulation air gap defect partial discharge, can be applied to the improvement of the electrode device related to the oil-paper insulation partial discharge, reduces the unnecessary errors caused by the deviation of the sample to the utmost extent; is easy to operate and assemble and low in cost, and can provide a guarantee for reducing unnecessary errors in the research of oil-paper insulation air gap defect partial discharge.

Description

technical field [0001] The invention belongs to the technical field of partial discharge of transformer oil-paper insulation air gap defects, and in particular relates to an electrode device in the research of partial discharge of transformer oil-paper insulation air gap defects. Background technique [0002] Large power transformers are important and key equipment in the operation of the power grid, and their safe operation is related to the safety of the entire power grid. The existence of air gaps in oil-paper insulation can easily cause partial discharge, which will damage the insulation structure, accelerate insulation aging, reduce insulation strength, and eventually lead to equipment failure. There are many reasons for air gaps, and mechanical stress, local overheating, vibration and other reasons may cause local cracking or cracking of insulation to generate air gaps. The existence of insulating air gap will accelerate the aging of transformer oil-paper insulation. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
Inventor 陈庆国吕品关毅池明赫孙佳馨聂洪岩程嵩
Owner HARBIN UNIV OF SCI & TECH
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